> For the complete documentation index, see [llms.txt](https://docs.libre.org/libre-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.libre.org/libre-docs/platform-docs/building-on-libre/libre-developer-tools.md).

# Developer Tools

### Libre Ecosystem Page

<https://chain.libre.org/apps> has some open-source and mobile applications that show the power of integrating or building on Libre. To add your app, please join our [Telegram](https://t.me/LibreBlockchain) and let us know how you are using Libre.

You can find some open-source projects at the following repositories:

**Smart Contracts, Scripts, (this Gitbook), and more:**

{% @gitlab-files/gitlab-code-block %}

**DeFi Dashboard UI and API:**

{% embed url="<https://gitlab.com/libre-tech>" %}

**Other Tools and Scripts:**

{% embed url="<https://github.com/edenia>" %}

### Libre API Endpoints

Most Libre validators run open-access API endpoints separately from their validator nodes. There are several types of nodes that provide different services - producer, full-history, hyperion, v1, v2, p2p. Check out [Libre Chain Nodes](https://gitlab.com/libre-chain/libre-chain-nodes) for in depth technical info on running your own nodes.

**Mainnet endpoint monitor:**

**Mainnet endpoint monitor:**

{% embed url="<https://libre.antelope.tools/endpoints>" %}
Libre Mainnet Endpoint Monitoring
{% endembed %}

**Additional blockchain tools:**

Visit [tools.libre.org](https://tools.libre.org/) for comprehensive Libre blockchain tools including loan monitoring, contract explorer, account history viewer, Bitcoin bridge tracker, vault inspector, and multisig proposal viewer. Open-source tools provided by Quantum validator - [source code available](https://github.com/bensig/libre-tools.com).

### Libre RPC API

Libre has a fully functional API for interacting with the chain and chain history. Create accounts, submit transactions, get balances, deploy smart contracts.

{% embed url="<https://testnet.libre.org/v2/docs/static/index.html>" %}
Swagger Docs for Libre API
{% endembed %}

### Javascript API

Open-source Javascript API package for interacting with the RPC API. There are over 14k examples of this simple integration [available on Github](https://github.com/search?q=eosjs\&type=code).

{% embed url="<https://www.npmjs.com/package/eosjs>" %}
EOSJS Signing API for mobile and web integrations
{% endembed %}

### Local Libre Testnet for Development

There is a very simple tool for setting up a local chain dev environment located here on Github.

For local development setup, see the [libre-chain-nodes repository](https://gitlab.com/libre-chain/libre-chain-nodes) on GitLab.

### Libre Link Signing Modules

Want to integrate Libre into your existing wallet? You can use the open-source Libre-Link and Libre-Link-Browser npm packages for authentication and execution of signing requests.

{% embed url="<https://www.npmjs.com/package/@libre-chain/libre-link-browser-transport>" %}

{% embed url="<https://socket.dev/npm/package/@libre-chain/libre-link>" %}